package com.example.annotation;

import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;


/**
 * 切面处理类，操作日志异常日志记录处理
 *
 * @author liangzai
 * @Date 2022-11-19
 */
@Aspect
@Component
@Slf4j
public class OperLogAspect {




    /**
     * 设置操作日志切入点 记录操作日志 在注解的位置切入代码
     */
    @Pointcut("@annotation(com.example.annotation.OperLog)")
    public void operLogPoinCut() {
    }

    /**
     * 设置操作异常切入点记录异常日志 扫描所有controller包下操作
     */
    @Pointcut("execution(* com.example.controller..*.*(..))")
    public void operExceptionLogPoinCut() {
    }

    /**
     * 正常返回通知，拦截用户操作日志，连接点正常执行完成后执行， 如果连接点抛出异常，则不会执行
     *
     * @param joinPoint 切入点
     * @param keys      返回结果
     */
    @AfterReturning(value = "operLogPoinCut()", returning = "keys")
    public void saveOperLog(JoinPoint joinPoint, Object keys) {
        // 获取RequestAttributes
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
        // 从获取RequestAttributes中获取HttpServletRequest的信息
        HttpServletRequest request = (HttpServletRequest) requestAttributes
                .resolveReference(RequestAttributes.REFERENCE_REQUEST);
        try {
            Message log = new Message();
            // 从切面织入点处通过反射机制获取织入点处的方法
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            // 获取切入点所在的方法
            Method method = signature.getMethod();
            // 获取操作
            OperLog opLog = method.getAnnotation(OperLog.class);
            if (opLog != null) {
                //业务模块
                log.setBmodule(opLog.businessModul());
                //功能模块
                log.setFmodule(opLog.operModul());
                log.setMessage(opLog.operMessage());
                log.setOperation(opLog.operMessage());
            }
            log.setIp(Optional.ofNullable(request.getHeader("X-Real-IP")).orElse(request.getRemoteAddr()));
         } catch (Exception e) {
            log.error("【Aop切面异常 ={}】",e.getMessage());
            e.printStackTrace();
        }
    }


    /**
     * 异常返回通知，用于拦截异常日志信息 连接点抛出异常后执行
     *
     * @param joinPoint 切入点
     * @param e         异常信息
     */
    @AfterThrowing(pointcut = "operExceptionLogPoinCut()", throwing = "e")
    public void saveExceptionLog(JoinPoint joinPoint, Throwable e) {
        // 获取RequestAttributes
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
        // 从获取RequestAttributes中获取HttpServletRequest的信息
        HttpServletRequest request = (HttpServletRequest) requestAttributes
                .resolveReference(RequestAttributes.REFERENCE_REQUEST);

         Message excepLog = new Message();
        try {
            // 从切面织入点处通过反射机制获取织入点处的方法
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            // 获取切入点所在的方法
            Method method = signature.getMethod();
             // 获取请求的类名
            String className = joinPoint.getTarget().getClass().getName();
            // 获取请求的方法名
            String methodName = method.getName();
            methodName = className + "." + methodName;
            // 请求的参数
            Map<String, String> rtnMap = converMap(request.getParameterMap());
            // 将参数所在的数组转换成json
            String params = JSON.toJSONString(rtnMap);
            //excepLog.setExcRequParam(params); // 请求参数
            //excepLog.setOperMethod(methodName); // 请求方法名
            //excepLog.setExcName(e.getClass().getName()); // 异常名称
            excepLog.setMessage(stackTraceToString(e.getClass().getName(), e.getMessage(), e.getStackTrace())); // 异常信息
            //excepLog.setOperUserId(UserShiroUtil.getCurrentUserLoginName()); // 操作员ID
            //excepLog.setOperUserName(UserShiroUtil.getCurrentUserName()); // 操作员名称
            //excepLog.setOperUri(request.getRequestURI()); // 操作URI
            //excepLog.setOperIp(IPUtil.getRemortIP(request)); // 操作员IP
           // excepLog.setOperVer(operVer); // 操作版本号
            System.out.printf("excepLog==" + JSON.toJSONString(excepLog));
        } catch (Exception e2) {
            e2.printStackTrace();
        }
    }

    /**
     * 转换request 请求参数
     *
     * @param paramMap request获取的参数数组
     */
    public Map<String, String> converMap(Map<String, String[]> paramMap) {
        Map<String, String> rtnMap = new HashMap<String, String>();
        for (String key : paramMap.keySet()) {
            rtnMap.put(key, paramMap.get(key)[0]);
        }
        return rtnMap;
    }

    /**
     * 转换异常信息为字符串
     *
     * @param exceptionName    异常名称
     * @param exceptionMessage 异常信息
     * @param elements         堆栈信息
     */
    public String stackTraceToString(String exceptionName, String exceptionMessage, StackTraceElement[] elements) {
        StringBuffer strbuff = new StringBuffer();
        for (StackTraceElement stet : elements) {
            strbuff.append(stet + "\n");
        }
        String message = exceptionName + ":" + exceptionMessage + "\n\t" + strbuff.toString();
        return message;
    }

}